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7053579 |
Device and method of controlling operation of robot apparatus
A device of controlling an operation of a robot apparatus having at least a plurality of movable units includes a driver driving the movable units, a determiner determining states of the movable...
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7038417 |
Current control loop bias calibration by integration
Ascertaining through integration a bias calibration level for a current control loop of a driver motor of a tape drive. The driver motor includes a current controller having as inputs a demand...
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7023155 |
Spindle motor acceleration control
Method and apparatus for accelerating a multi-phase motor having a rotatable rotor is disclosed. A first commutation state in which the rotor resides is identified, a first position of the rotor...
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7019482 |
Motion controller having sliding mode controller
A motion controller for maintaining a controlled system on a switching hyperplane regardless of the magnitude of disturbance. The motion controller includes a target position generator, a sliding...
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6995537 |
Closed-loop control system to mitigate PWM switching noise
One aspect of the present invention provides a motor control system that includes a linear control system operative, in a linear mode, to provide a plurality of control signals for driving an...
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6992454 |
Motor controller and method for measuring characteristics of mechanism
A detector ( 20 ) detects the position of a motor, and a differentiator ( 26 ) calculates the speed of the motor from the position of the motor. An command generation section ( 11 ) fixes a...
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6984955 |
Motor control device
In a motor control device controlling a motor by a state feedback control, high control accuracy is maintained regardless of fluctuations in a motor load so as to improve control performance of the...
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6972540 |
Disk drive employing wedge spindle speed control with eccentricity compensation
A disk drive is disclosed wherein a BEMF speed error is measured during a BEMF spindle speed control mode, and a spindle control current is updated in response to the BEMF speed error to drive the...
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6973353 |
Programmable controller for controlling an output state
A programmable controller for controlling one or more outputs based on position indicated from a position transducer. The controller includes an interface that converts the transducer signals into...
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6965810 |
Machining simulation machine
A model producing means for modeling a chip model at an edge of a solid model of a nozzle through a predetermined space in a three-dimensional virtual space, and a trace machining propriety judging...
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6961627 |
Control system
A control system that constantly and accurately controls a control variable so that it remains within an allowable range is provided. The control system in accordance with the present invention...
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6959219 |
Control apparatus having a limit cycle auto-tuning function
A control apparatus includes a manipulated variable output unit, calculation unit, first lower limit setting unit, first upper limit setting unit, second lower limit setting unit, second upper...
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6949905 |
Servo control system and method of setting
A servo control system which comprises an original cam pattern generator 11 for generating a first pattern of a cam shape relative to a phase corresponding to one revolution of a cam mechanism; a...
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6940252 |
DC motor control method and apparatus
A DC motor control method and apparatus for reducing time required for deceleration without degrading positioning accuracy. In a device which drives a mechanism by using a DC motor as a power...
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6937910 |
Method and a system for evaluating whether a signal is suitable for feed-forward control
A method for evaluating whether a measurable disturbance on a process controlled by a feedback controller is suitable for feed-forward control. The disturbance is measured. The controller output...
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6937430 |
Robust triple-mode compensator for hard disk drives with dynamic friction
Friction existing between any two surfaces having relative motion is nonlinear, multiform, and is difficult to model. Nonlinear friction in the actuator pivot of a hard disk drive (HDD) limits the...
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6914402 |
Method for synchronized operation of machines having axes actuated by single drives
In a method for operating machines ( 138 ) with a plurality of shafts ( 102, 110, 111 ), in which the shafts ( 102, 110, 111 ) are each driven, synchronized with one another, by individual drive...
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6912430 |
Execution device and debug device for motion program
An executing apparatus for executing a motion program which contains both a motion instruction for controlling operation of a machine, and an instruction for controlling input/output with respect...
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6903897 |
Performance of a rotary actuator in a disk drive
A method for improving the performance of a rotary actuator in a disk drive, the rotary actuator comprises a voice coil motor (VCM) characterized by a torque parameter, the disk drive comprises a...
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6895284 |
Supervisory unit and supervisory control system provided with the same
A supervisory control system including a control unit to which an object load is connected and an operation unit, both being connected to each other via a communication line. The object loads can...
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6892101 |
Feedback control method and feedback control apparatus
According to a feedback control method, the response process of set point tracking control is divided into three, tracking, convergence, and stabilization phases. The phase is switched to the...
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6882125 |
Motor controller with position detector
A motor controller includes a motor-position detector, a motor driver and a power cable having a pair of electric lines (two lines) which feeds power from the driver to the detector. The detector...
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6879124 |
Method to detect the true zero-crossing points of the phase back EMF for sensorless control of brushless DC motors
In the present system and method, ZCP level signals of each phase voltage are first obtained. Among the detected ZCP level signals, some ZCPs are generated by phase back EMF, which are true ZCPs...
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6876891 |
Method and apparatus for providing tactile responsiveness in an interface device
A method and apparatus implementing a user interface device, such as a mouse or trackball, having electronically controllable tactile responsiveness which is flexibly programmable. A user interface...
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6870342 |
Cosine bang-bang seek control for a voice coil of a disc drive
A method and apparatus for improving the timing of a seek operation through the removal of the coast phase of conventional model reference waveform type control systems are provided. With the...
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6865441 |
Parallel trajectory generation, interpolation, and control in a motion control application
A system and method for performing trajectory generation, interpolation, and control for a motion control application, where the trajectory generation, interpolation, and control are performed in...
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6861814 |
Control parameter automatic adjustment apparatus
A control parameter automatic adjustment apparatus acquires a movable range of a drive shaft of a drive system, and automatically generates a test movement program to automatically adjust a control...
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6856111 |
Method and device for controlling angular speed of an electromechanical drive train with little damping
Method and device for controlling the angular speed of an electromechanical drive train with little damping. The control of the speed of the load driven in rotation by an electromechanical drive...
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6853160 |
Air conditioning valve actuator for a motor vehicle
An air conditioning valve actuator for a motor vehicle operating on an electric step motor with a permanent magnet capable of delivering mechanical power at least equal to 50 mW, and a reduction...
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6845951 |
Method of controlling pointing for a flexible structure
A method of controlling pointing for a flexible structure such as a satellite includes: providing feedforward and reference inputs of a pointing control system with prefilters; and scheduling the...
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6844693 |
Position control apparatus for motor
An electric motor position control apparatus in accordance with the present invention has a plurality of sets of control parameters including at least the proportional gain of a position control...
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6842651 |
Programmable controller having plural speed pattern generators
A programmable controller comprises a speed pattern generator( 12 ) including speed pattern generator units ( 12 a- 12 n ) that respond to input quantities of the amount of movement, speed,...
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6838855 |
Method and apparatus for controlling motor
In controlling a motor in a device which drives a mechanism using the motor as a power source, in executing driving, an ideal profile of the driving is generated in accordance with a target...
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6838851 |
Inner-force providing input device having a power-operated actuator for generating a click feel
Under electric control of a motor by a CPU, before the rotation angle of a rotary knob reaches a predetermined angle (20°, 40°, 60°, . . . 360°), a torque in the same direction as a rotational...
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6831809 |
Rotary recording apparatus and method of controlling the apparatus
A control arrangement having a feedforward system and a feedback system, a control model for generating reference position data from a feedforward control signal is separated into an original...
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6831438 |
Method and apparatus for controlling DC motor
Controlling a direct current motor driving an object by determining, if the object does not reach a target position, a reference velocity corresponding to a point of time from a predetermined...
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6815919 |
Accelerated startup for a balancing personal vehicle
A method and apparatus that afford a user accelerated access to operation of a balancing personal transporter. The method includes first initializing a single-axis stabilizer, and, while...
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6791785 |
Disk drive with efficient coil temperature estimation
A controller for a disk drive that accesses a look up table having a plurality of thermally characterized values corresponding to a plurality of seek operations. For each seek operation, the...
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6788490 |
Circuit for estimating the speed of an electromagnetic actuator
A circuit estimates speed of an electromagnetic actuator associated with a reading head of a disk storage unit and a digital controller. The circuit includes first and second supply terminals and...
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6774598 |
Method and circuitry for producing nominal position values for a closed loop position control of a numerically continuous-path controlled machine
A method for generating nominal position values for a position control loop of a numerically continuous-path controlled machine. The method includes presetting nominal position values with a...
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6772018 |
Control system apparatus and method using a controlled device for manual data entry
A system for commissioning a controller accepts a different manual input during each of several different phases of the installation and provides the installer with a different detectable cue...
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6765360 |
Dynamic optimizing method for speed data and positioning device using this method
A dynamic optimization method for speed data, for compensating for a speed data maximum value and a minimum resolution that can be specified by users without depending on a speed pattern...
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6760631 |
Multivariable control method and system without detailed prediction model
A multivariable control method and system suitable for manipulating process variables based on observed changes in controlled objectives without extensive data analysis or involved model...
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6760633 |
Method and apparatus for predicting stability of a closed loop apparatus
A method for predicting stability of a closed loop apparatus is disclosed. The closed loop apparatus has an open loop impedance and at least one inherent internal gain. The method comprises the...
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6748279 |
Method for improving a manufacturing process by conducting a full factorial experiment to optimize process variable settings
A factorial experiment is conducted on a manufacturing process to generate a response matrix. The responses are used to calculate individual contrasts in a document as well as replicates effects....
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6745088 |
Multi-variable matrix process control
Computer-implemented system and method for controlling a processing apparatus having at least one independently controlled manipulated variable and at least one controlled variable responsive to...
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6744590 |
Seek trajectory adaptation in sinusoidal seek servo hard disk drives
A method, apparatus, and computer program product for a hard disk drive servomechanism. In one embodiment, the apparatus comprises a disk which has a surface, a spindle motor that rotates the disk,...
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6738679 |
Positional control system and positional control method
A positional control system wherein the position of the controlled object connected to a drive is controlled to a variable target or desired position. A period is determined which starts with a...
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6713978 |
Method and system for determining induction motor speed
A non-linear, semi-parametric neural network-based adaptive filter is utilized to determine the dynamic speed of a rotating rotor within an induction motor, without the explicit use of a speed...
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6696809 |
Robot, servo circuit, actuator, robot control method, and actuator driving method
Based on a control object, a result of the detection of driving of an actuator and a response from a standard mathematical model of the actuator, the actuator is controlled, or in a servo system...
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